Wagon-dump.



J. E. CAMP.

WAGON DUMP.

APPLIGATION P1LBD'MAR-19, 1907.

909,281. a' Patented Jan.12,19o9f 2 SHEETS-SHEET 1.

J. E. CAMP.

1 WAGON DUMP.

APPLICATION FILED MAR. 19, 1907.

' Patented Jan. 12, 1909.

2 SHEETS-SHEET 2.

1 frame moves is such, with respect to the length of the wagon, that in the height at which the front end ofthe latter is raised the amount of movement of the rear end is negli'- gible and as most all wagons measure about the same between their axles the angles at whichthelifting platform is raised can be made the same' in l jacks constructed.

An advantage/ of inclining the cylinder, also, isl that the-weight is directly downward upon the piston rod whereas if the lift were 4a vertical one itis evident that the thrust kwithin reach ofthe operator. A

upon the piston-rod would not be directly downward `but rather one such as would tend tospring or bend said rod.

As it is my purpose to raise the piston by means of Ahydraulic power I provide fluid 'pumping mechanism which consists for instance, of a pumpe of any approved form, suitably 4and firmly held. A -pipe 7 con'- nects the top of the pump with the bottom of the cylinder while afluid containing tank 8 is provided which has connection with the 'pump through a pipe 9 having a check-valve 10 therein. `A pipe 11` also connects the tank with the pipe 7 between the pump and the cylinder at any convenient point, and in said pipe 11.is a controlling valve `12 operated through a lever arm 13 and a rod 14 connected with the free end thereof, the said.

(not shown) is operated through the lpistonrod indicated at 20.

The front wheels of the wagon-to be dumped rest upon the lifting-frame between vthe sills M Mas indicated in. Fig.` 2, thesills forming a lodgment and lock for said wheels. By means of a suitable clutch mechanism` indicated at 21 in Fig. 1, but not shownin detail, the shaft lpis driven from any source of power* and this imparts motion to the `eccentric 17 resulting in drawing fluid from lthe upper end of the cylinder through the .50

tank Sinto the ump through pipe 9 which is then forced t rough the pipe 7 into the bottom of the cylinder E beneath the piston to raise the latter. 'The cross head L is therebyv raised resulting also in raising the liftin -frame throu h the bail O at one end,

and t e bailQ at t e other through a cable R. Thepassage of oil to the pump from the tank 8 is through the pipe 9 asdescribed,

the check-valve 10 therein preventing the iuid passing from the pump back to the said tank. -The pressure from the pump, therefore, .must belliielieved through the said pi e 7 to raiseI the piston. Oil in the cylindier upon 'the top o the piston is forced into the tank 8 by t l e risifng piston `through the pipe vdisplaced byA the vpiston-rod J.

15, thence to the ump and downl into the cylinder beneath e piston. I It is evidentthat thev wagon may be raised as high as desired or within the limitof the height of l the cylinder so that it will be tipped at the desired "angle to discharge all of its load. When raised tothe desired height farther movement of the wagon may be interrupted by throwing out the clutch mechanism or by partially o ening the Valve 12 which relieves the pressure from the pump through the pi e 11 back in'to the tankand again through t e pump in a continuous flow, the opening of the valve being ust sufficient to permit said by the weight'lof the wagon the pump pres- 4 flowwithout al owing the piston to lower sure sustaining the piston in the raised pos1- tion through the pipe 7. This operation,

however, has been described in a former application and will not' be further dwelt upon. When the wagon has been relieved of its load the valve 12 is opened wide thus permitting the entire bulk of oil beneath the" piston to arise through the pipe 7 into, the vessel Sand thence into the toI of vthe cylinder upon the piston, this resulting vfrom the weight of the wa on and the lifting#4 platform. The wagon as at -this time lowered to its normal position.

The tank 8 is employed for holdin the oil y W en the piston-rod J- is entirely outside of the cylinder the amount of oil that the tank will hold is sufhcient to fill the s ace that the 'rod would occupy. It will will be empty, ut on the other hand wfr'en e seen, therefreflm* vthat when the. iston-rod is raised the Atank scribedinl one of my' former applications. 105

The' tank likewise, of course, constitutesaA conduit for" the passage of fluid betweenQ the pump l andcylinder. The pump may be` permitted 'to'.continue its `action wh n the valve l2 is o en so that the vfluid will circulate throu said pump arid the pipes 7, 1'1 and 9.1wit out passing to the bottom of thecylinder.-

Although .I have described the pumpingA mechanism Iattach no claim to it herein, considered by itself. As arranged my wagon dump lis of exceedingly simple forni since there are but few parts eni loyedand it can, therefore, be built at sinail cost and at the same time it is light and easily portable.l

Having thus described my invention, I- claim:

1. In a wa on jack, a su port, a lifting member for t e front end of) the wagon, a cylinder mounted on end on the support and inclined at an angle toward the rear end of the Wagon, a standard erected on said support and also inclined rearwardly, guiding members on the lifting member to engage side of the same ff: v

acens i an angle substantially parallel to the inclined" cylmder, a pistony and piston-red for the cylmder, a cross head for the pieten rod, a

raisable frame for supporting the front Wheels of a wagon, means attached to the raisable frame and engaging the cylinder and the standard for guiding said frame in the vertical movement, and means attached te the said raisable frame and connected to the cross head, and fluid pumping apparatus for raising the piston.

3. ln a wagon jack the combination of a portable support, a lifting member i'or the iront wheels of a wagon, a hydraulic cylinder mounted on end on the support, and inclined toward the rear end of the wagon, a standard erected on the support also inclin'edvtoward the rear, a piston and piston-rod for the cylinder, the said piston-rod having a free upper extremity, means connected at one and having direct attachment to one end of the lifting member below it, a cable connected at the opposite side of the piston-rod and extending downward, and then upwardandover the standard and llaving attachment to the oppositeend ef the lifting member, means carriedy by the latter for engaging' the standard andI the cylinder cylinder, means for susand by which said lifting member is guided rearwardly in'its upward movement by said standard and cylinder, and means. ierfentering duid. under pressure into thevcylinder against the piston to move the piston to raise the lifting member. C,

4. In a wagon jack the combination of Ya portable support, a lifting member font/he front wheels oi' a wagon, a hydraulic cylinder p mounted on end on the support, vand inclined toward the rear end of the Wagon, a standard erected Yonthe support and also inclined toward the rear, a piston and piston-rod for the cylinder, the said piston-rod having al free upper extremity, means connected at one side ef the same and having direct attachment to one end oil the lifting member below it, a cable connected at the opposite side of the piston-rod and extending downward, and

then upward and over the standard and lgaving attachment lifting member, means carried by the latter for engaging the standardand the cylinder n A and by which said lifting member is guided rearwardly in its upward movement by said standard and cylinder, means for entering iiuid under pressure into the cylinder against the piston to move the piston to raise the lifting member, and other means for liberating the fluid from the cylinder to permit the wagon and lifting member to lower. 4

lntestimony whereof I afl-ix my signature in presence 'ci' ,two witnesses.

JOSEPH EDWARD CAMP.

Witnesses: l

C. W. CAMP, B. F. NAFZIGER.

to the opposite end of the ,l 

